WP4 activities: Task Energy Plan Executive Summary Report D 4.4

Transcription

1 Energy Efficiency Improvement Program (PMEE) for public buildings owned by the municipality of Agnone WP4 activities: Task Energy Plan Executive Summary Report D 4.4 October 2014

2 Introduction ALTERENERGY (Energy Sustainability for Adriatic Small Communities) is a Strategic Project funded within the cross-border Cooperation Programme IPA-Adriatic Launched in September 2011, with a 12,5 Mln Euro total budget and with a duration of 4 years (completion of work in August 2015), ALTERENERGY aims to promote Energy sustainability through the ever- wider use of renewable energy sources and through the diffusion of interventions to increase efficiency and energy saving, thereby seeking to contribute to the achievement of the Europe 2020 objectives. In particular, this Strategic Project promotes sustainability within small Adriatic communities (having a population of less than inhabitants ) through an integrated approach for the efficient use of energy and its production from renewable sources. The specific aim of the project is to develop replicable management models of sustainable energy resources within small Adriatic municipalities, thus improving their ability to plan and manage integrated actions of energy saving and production from renewable sources. In this context, the region Molise(Partner of the Strategic Project ALTERENERGY 1 )has identified Agnone as the community where to conduct the experimental activities of the Project(Memorandum of Understanding between Region and Municipality signed on 17/12/2013). By public tender, region Molise has designated a Temporary Firms Association (formed by IZI spa, EdilNEZ consortium, CRESME Consulting Srl, AFORIS Srl) to provide all the necessary technical support to accomplish its tasks for the Alterenergy Project. One of these task is the development of an Energy Efficiency Improvement Program (in Italian PMEE ) for public buildings to be tested in Agnone municipality. The task was performed with the support Planergy, a web application specifically designed to monitor public real estate from the energy consumption point of view. 2 The performed activities are fully consistent with those included in the SEAP issued by Agnonemunicipality on May 2013 which are organized into the following three phases. 1. Energy Assessment: after a site survey in each public building, collection and analysis of data related to energy consumption and structure performance (ref.wp4 activities - Task 4.3); 1 ALTERENERGY relies on a partnership of 18 organizations, regions, ministries and energy agencies belonging to all the countries of the Adriatic area: Italy (7 Adriatic Regions- Puglia, Abruzzo, Emilia Romagna, Friuli Venezia Giulia, Marche, Molise, Veneto), Albania, Bosnia Herzegovina, Croatia, Greece, Montenegro, Serbia and Slovenia.

3 2. Energy plan: after a technical desk analysis and a quantitative / qualitative assessment of results achieved in the first phase, identification of candidate Energy Efficiency Improvement 2 measures (such as technical interventions on building envelope or systems), estimation of their expected cost-benefit ratios, selection of the package of applicable technical solutions which maximizes the expected revenues at the entire real estate stock level i.e. PMEE(ref. WP4 activities -Task 4.4); 3. Definition of a convenient Financial Plan which can support PMEE procedures according to a building Monitoring and Verification approach(ref. WP6 activities -Task 6.2) WP 4 task 4.3 Energy Assessment WP 4 task 4.4 Energy Plan WP 6 task 6.2 Financial Plan Definition This document is an executive summary of Report D 4.4 concerning Energy Plan activities (phase II), carried out on 8 properties of Agnone municipality. 3 2 In Italian: Misure di Efficienza Energetica MEE

4 Results outline The energy plan has been developed for a set of 8 properties owned by Agnone municipality on the basis of the information framework obtained from the Energy Assessment (please refer to Report D 4.3). The results are summarized in the following table. USE ENERGY CONSUMPTION Code Property Main Use Total available area (in & out) (m 2 ) Available Int. Area (m 2 ) Used int. area (m 2 ) Usage rate (%) (3) Primary Energy Perf. Energy Index (kwhp) kwhp/m 2 (mean ) (mean ) CO 2 emission (kg CO 2 ) (mean ) 1 Town Hall Office ,5% Palazzo San Francesco Culture ,5% Palazzo dei Filippini ,0% Palazzo Bonanni Office ,2% Palazzo Nuova Pretura Scuola elementare Capoluogo Marinelli Office ,3% Education ,3% Scuola Materna Education ,3% Asilo nido Ape Maia Education ,3% The identification of the Energy Efficiency Improvement measures has been achieved in three steps: 1. Construction of a catalogue of solutions feasible for our analysed building set. 2. Estimate of the costs of proposed measures and of their expected effects on each building. 3. Selection of those measures which are successfully applicable for the analysed properties through an evaluation in terms of their cost benefit ratio.

5 The catalogue of possible measures to improve Energy Efficiency For the purposes of the evaluation and selection of measures to improve energy efficiency, below are cited the solutions found and belonging to the following three categories: solutions to improve building envelope; solutions to improve technological systems; incentives for energy efficiency. 1.1 Interventions to improve building envelope performance Energy Efficiency Measure on building envelope Cost (material + mounting) /m 2 Cost considered for the estimation /m 2 Achievable Energy savings Savings considered in the estimation Thermal insulation of Perimeter walls INV1 - External coat % 20% INV2 - Internal insulation % 15% 5 Roof Thermal insulation INV3 Insulated Soffit % 15% INV4 Insulated top surface % 25% INV5 Thermal Insulation of floor on the ground % 7% INV6 Replacement of windows and doors % 7% Energy Efficiency measures: Costs and savings table

6 1.2 Interventions for improvement of technological systems Energy Efficiency Measure on building systems Notes Technical life IMP1 Replacement of heat generators with condensation generators IMP2 Replacement of electrical water heaters with electric heat pumps IMP3 Installation of solar thermal collectors for hot water facility Modular condensation generators with digital thermo regulation Air-to-water heat pump with storage tank at wall, plastic material with high thermal insulation Flat plate solar collectors, storage ranging from 200 to 300 litres, natural circulation, high efficiency rate. >= 15 years 15 yars 15 years IMP4 Installation of photovoltaic system P<20 kw Photovoltaic modules, 60 polycrystalline high efficiency silicon cells, Nominal power 240 kw. 20 years 6 IMP5 Replacing fluorescent lamps with LED hours IMP6 Replacing incandescent bulbs with LED lamps (Light Emitting Diode) LED hours IMP7 Replacing halogen lamps with LED hours

7 Financial instruments and incentive tools In this report the following accessible incentive tools have been considered for energy efficiency improvement interventions: - Energy Efficiency Thermal Incentive (in Italy named Conto termico ); - Net metering for photovoltaic systems; - Energy Saving Certificates (or white certificates). For the buildings set under analysis only the Conto termico incentive has found fruitful applications. Its characteristics are summarized in the following table. Summarizing framework of Energy Efficiency Thermal Incentive ( Conto Termico in Italy) Solutions TYPE OF INTERVENTION CONDITIONS FOR PUBLIC ADMINISTRATION INV IMP1 Improvement of the building envelope (e.g. insulation of walls and roofs, replacement of windows and doors, solar screen installation) Installation in replacing of condensing boilers Access mode: direct, after execution of the interventions incentive booking, funding approval, start of intervention within 60 days from approval. Incentive: 40% of sustained costs with limitations on building surface entity and overall cost. Duration: 5 years 7 Technical requirements: guaranteed minimum value of heat transmittance (for building envelope); guaranteed minimum values for thermal efficiency (for systems). IMP3 IMP2 Replacement of heating systems with heat pumps nominal inferior thermal power P 500 kw installation of solar cooling systems, solar thermal collectors replacement of electric water heaters with heat pump water heaters Access mode: direct, after execution of the interventions incentive booking, funding approval, start of intervention within 60 days from approval. Incentive: for heat pumps incentive rates are dependent on system technology and on expected thermal energy production level; for solar cooling and/or heating systems incentive rates depend on radiation surface. Duration: 2 years system replacements up to 35 kw; 5 years in all other cases. Technical requirements: guaranteed minimum values of yield and performance Replacement of heating systems with heat pumps nominal inferior thermal power 500 kw P 1000 kw Access mode: booking and registration of intervention conditioned on funding availability. Incentive, duration and minimum tecnical requirements: as above

8 Evaluation criteria to assess Energy Efficiency interventions Based on building characteristics (e.g. volumes, dimensions, envelope surfaces, usage, energy flows behaviour) and on measured energy consumption (period ), a building model has been developed and the potential impact of each improvement measure listed in the catalogue has been analysed and evaluated. Interventions not compatible with existing zoning ordinances have been discarded. Adopted performance indicators Each standard type of intervention has been evaluated according to the following two performance indicators : where 1. payback time T r defined as the number of years an Energy efficiency intervention provides a return on investment; C inv denotes the total investment amount; I tot the total obtainable incentive amount; R the annual expected energy saving rate. T r C inv R I tot 8 2. CO 2 emissions abatement cost indicator which is defined as the ratio between the initial investment cost C inv [Euro] and the avoided emissions of CO 2 t saved during the entire investment period (related to the equipment technical life). The selected interventions package The package of selected interventions to be implemented on the analysed building stock is reported in the following table.

9 ESTIMATED ANNUAL ENERGY SAVINGS INCENTIVE BENEFICI AMBIENTALI BUILDING TYPE SOLUTION INVESTMEN T ESTIMATED TECHNICAL LIFE EE GAS ANNUAL COST SAVINGS / year n years tot Tons of CO2 NOT EMITTED INTO THE ATMOSPHERE (in technical life) Cost/benefit ratio Euro years kwh mc / year /Ton CO2 1 municipio- verdi INV municipio- verdi INV municipio - tamburri INV municipio - tamburri INV municipio IMP municipio IMP Pal. San Francesco IMP Pal. San Francesco IMP Pal. San Francesco IMP Pal. San Francesco IMP Pal. Bonanni IMP Nuova pretura INV Nuova pretura INV Nuova pretura IMP Nuova pretura IMP Nuova pretura IMP Scuola elementare INV Scuola elementare INV Scuola elementare INV Scuola elementare IMP Scuola elementare IMP Scuola elementare IMP Scuola elementare IMP Scuola elementare IMP Asilo nido IMP Asilo nido IMP Asilo nido IMP Scuola materna INV Scuola materna INV Scuola materna IMP Scuola materna IMP Scuola materna IMP TOTALI GENERALI The selected investment package shows the feasibility of an investment plan where 32 energy efficiency measures are applied on eight buildings for a total investment of The initiative should generate: An expected annual savings of per year; A total incentive of (distributed in 5 years). Pay Back Time: about 11 years. During the technical life of the interventions package, the avoided carbon dioxide emissions in the atmosphere amount to t for an expected CO 2 abatement cost equal to 156 /Ton.